Gorman-Rupps Off-The-Shelf (OTS) Program introduces a new line of submersible pumps. The line features 23 models available in sizes ranging from 1 inch to 4 inches including sump/utility, shedder sewage and contractors models.Materials of construction include: Cast Iron, Stainless Steel and Plastic. Depending on the pump model, the line delivers up to 450 gpm and 90 feet of head. Most pumps are available for shipment in 24 hours.